一、功能简介
本项目使用STM32F103C8T6单片机控制器，使用无源蜂鸣器模块、IIC OLED显示模块、DS18B20温度传感器、独立按键等。
主要功能：
系统运行后，OLED显示温度、日期和时间；
可按下K3键进入时间修改模式，K4键用于选择修改位置，K1和K2键调节；再次按下K3键进入闹钟设置模式，K4键用于选择修改位置，K1和K2调节；当打开闹钟开关后，到达设定闹钟时间，开始闹铃，30S后自动关闭，也可通过K3键手动关闭闹铃。
二、软件设计
/*
作者：嗨小易（技术交流QQ群：570487280）
*/
//系统数据显示
void sys_data_show(void)
{
u8 buf[9];
while(1)
{
//正常模式显示
if(sys_ctrl.mode==0)
{
//温度显示
buf[0]=sys_ctrl.temp/100+0x30;
buf[1]=sys_ctrl.temp%100/10+0x30;
buf[2]='.';
buf[3]=sys_ctrl.temp%100%10+0x30;
buf[4]='\0';
OLED_ShowString(5*8,0,buf,16);
//日期显示
buf[0]=sys_ctrl.time[0]%100/10+0x30;
buf[1]=sys_ctrl.time[0]%100%10+0x30;
buf[2]='-';
buf[3]=sys_ctrl.time[1]/10+0x30;
buf[4]=sys_ctrl.time[1]%10+0x30;
buf[5]='-';
buf[6]=sys_ctrl.time[2]/10+0x30;
buf[7]=sys_ctrl.time[2]%10+0x30;
buf[8]='\0';
OLED_ShowString(8*8,20,buf,16);
//时间显示
buf[0]=sys_ctrl.time[3]%100/10+0x30;
buf[1]=sys_ctrl.time[3]%100%10+0x30;
buf[2]=':';
buf[3]=sys_ctrl.time[4]/10+0x30;
buf[4]=sys_ctrl.time[4]%10+0x30;
buf[5]=':';
buf[6]=sys_ctrl.time[5]/10+0x30;
buf[7]=sys_ctrl.time[5]%10+0x30;
buf[8]='\0';
OLED_ShowString(8*8,40,buf,16);
//星期1-7显示
buf[0]=sys_ctrl.time[6]+0x30;
buf[1]='\0';
OLED_ShowString(15*8,0,buf,16);
}
//调整时间显示
else if(sys_ctrl.mode==1)
{
//日期时间选择
switch(sys_ctrl.cnt)
{
case 0://年
buf[0]=sys_ctrl.time[6]%10+0x30;
buf[1]='\0';
OLED_ShowStringex(15*8,0,buf,16,1);
buf[0]=sys_ctrl.time[0]%100/10+0x30;
buf[1]=sys_ctrl.time[0]%100%10+0x30;
buf[2]='\0';
OLED_ShowStringex(8*8,20,buf,16,0);
break;
case 1://月
buf[0]=sys_ctrl.time[0]%100/10+0x30;
buf[1]=sys_ctrl.time[0]%100%10+0x30;
buf[2]='\0';
OLED_ShowStringex(8*8,20,buf,16,1);
buf[0]=sys_ctrl.time[1]/10+0x30;
buf[1]=sys_ctrl.time[1]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(11*8,20,buf,16,0);
break;
case 2://日
buf[0]=sys_ctrl.time[1]/10+0x30;
buf[1]=sys_ctrl.time[1]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(11*8,20,buf,16,1);
buf[0]=sys_ctrl.time[2]/10+0x30;
buf[1]=sys_ctrl.time[2]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(14*8,20,buf,16,0);
break;
case 3://时
buf[0]=sys_ctrl.time[2]/10+0x30;
buf[1]=sys_ctrl.time[2]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(14*8,20,buf,16,1);
buf[0]=sys_ctrl.time[3]/10+0x30;
buf[1]=sys_ctrl.time[3]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(8*8,40,buf,16,0);
break;
case 4://分
buf[0]=sys_ctrl.time[3]/10+0x30;
buf[1]=sys_ctrl.time[3]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(8*8,40,buf,16,1);
buf[0]=sys_ctrl.time[4]/10+0x30;
buf[1]=sys_ctrl.time[4]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(11*8,40,buf,16,0);
break;
case 5://秒
buf[0]=sys_ctrl.time[4]/10+0x30;
buf[1]=sys_ctrl.time[4]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(11*8,40,buf,16,1);
buf[0]=sys_ctrl.time[5]/10+0x30;
buf[1]=sys_ctrl.time[5]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(14*8,40,buf,16,0);
break;
case 6://星期
buf[0]=sys_ctrl.time[5]/10+0x30;
buf[1]=sys_ctrl.time[5]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(14*8,40,buf,16,1);
buf[0]=sys_ctrl.time[6]%10+0x30;
buf[1]='\0';
OLED_ShowStringex(15*8,0,buf,16,0);
break;
}
}
//闹钟设置显示
else if(sys_ctrl.mode==2)
{
buf[0]=sys_ctrl.alarm_time[0]/10+0x30;
buf[1]=sys_ctrl.alarm_time[0]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(6*8,30,buf,16,1);
buf[0]=sys_ctrl.alarm_time[1]/10+0x30;
buf[1]=sys_ctrl.alarm_time[1]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(9*8,30,buf,16,1);
//时间选择
switch(sys_ctrl.cnt)
{
case 0://闹钟开关
buf[0]=sys_ctrl.alarm_time[1]/10+0x30;
buf[1]=sys_ctrl.alarm_time[1]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(9*8,30,buf,16,1);
if(sys_ctrl.alarm_onoff==1)OLED_ShowStringex(6*8,0," ON",16,0);
else OLED_ShowStringex(6*8,0,"OFF",16,0);
break;
case 1://时
if(sys_ctrl.alarm_onoff==1)OLED_ShowStringex(6*8,0," ON",16,1);
else OLED_ShowStringex(6*8,0,"OFF",16,1);
buf[0]=sys_ctrl.alarm_time[0]/10+0x30;
buf[1]=sys_ctrl.alarm_time[0]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(6*8,30,buf,16,0);
break;
case 2://分
buf[0]=sys_ctrl.alarm_time[0]/10+0x30;
buf[1]=sys_ctrl.alarm_time[0]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(6*8,30,buf,16,1);
buf[0]=sys_ctrl.alarm_time[1]/10+0x30;
buf[1]=sys_ctrl.alarm_time[1]%10+0x30;
buf[2]='\0';
OLED_ShowStringex(9*8,30,buf,16,0);
break;
}
}
OLED_Refresh_Gram();//刷新显示缓存
break;
}
}
//系统数据设置
void sys_data_set(void)
{
u8 key=0;
key=KEY_Scan(0);
//设置
if(key==KEY3_PRESS)
{
if(sys_ctrl.alarm_flag==0)//闹钟还未启动
{
sys_ctrl.cnt=0;
sys_ctrl.mode++;
if(sys_ctrl.mode>2)
{
sys_ctrl.mode=0;
RTC_Set(sys_ctrl.time[0],sys_ctrl.time[1],sys_ctrl.time[2],sys_ctrl.time[3],sys_ctrl.time[4],sys_ctrl.time[5]);
sys_open_show();//系统开机界面显示
}
if(sys_ctrl.mode==2)
{
//记录当前时间，作为报警时间起点
sys_ctrl.alarm_time[0]=sys_ctrl.time[3];
sys_ctrl.alarm_time[1]=sys_ctrl.time[4];
alarm_set_show();//闹钟设置界面显示
}
}
else//闹钟已启动，可手动K3键关闭
{
sys_ctrl.alarm_flag=0;
}
}
//时间修改设置
if(sys_ctrl.mode==1)
{
//选择
if(key==KEY4_PRESS)
{
sys_ctrl.cnt++;
if(sys_ctrl.cnt>6)sys_ctrl.cnt=0;
}
//加
else if(key==KEY1_PRESS)
{
switch(sys_ctrl.cnt)
{
case 0://年
sys_ctrl.time[0]++;
if(sys_ctrl.time[0]>2099)sys_ctrl.time[0]=0;
break;
case 1://月
sys_ctrl.time[1]++;
if(sys_ctrl.time[1]>12)sys_ctrl.time[1]=1;
break;
case 2://日
sys_ctrl.time[2]++;
if(sys_ctrl.time[2]>31)sys_ctrl.time[2]=1;
break;
case 3://时
sys_ctrl.time[3]++;
if(sys_ctrl.time[3]>23)sys_ctrl.time[3]=0;
break;
case 4://分
sys_ctrl.time[4]++;
if(sys_ctrl.time[4]>59)sys_ctrl.time[4]=0;
break;
case 5://秒
sys_ctrl.time[5]++;
if(sys_ctrl.time[5]>59)sys_ctrl.time[5]=0;
break;
case 6://星期
sys_ctrl.time[6]++;
if(sys_ctrl.time[6]>6)sys_ctrl.time[6]=0;
break;
}
}
//减
else if(key==KEY2_PRESS)
{
switch(sys_ctrl.cnt)
{
case 0://年
sys_ctrl.time[0]--;
if(sys_ctrl.time[0]<0)sys_ctrl.time[0]=2099;
break;
case 1://月
sys_ctrl.time[1]--;
if(sys_ctrl.time[1]<1)sys_ctrl.time[1]=12;
break;
case 2://日
sys_ctrl.time[2]--;
if(sys_ctrl.time[2]<1)sys_ctrl.time[2]=31;
break;
case 3://时
sys_ctrl.time[3]--;
if(sys_ctrl.time[3]<0)sys_ctrl.time[3]=23;
break;
case 4://分
sys_ctrl.time[4]--;
if(sys_ctrl.time[4]<0)sys_ctrl.time[4]=59;
break;
case 5://秒
sys_ctrl.time[5]--;
if(sys_ctrl.time[5]<0)sys_ctrl.time[5]=59;
break;
case 6://星期
sys_ctrl.time[6]--;
if(sys_ctrl.time[6]<0)sys_ctrl.time[6]=6;
break;
}
}
}
//闹钟设置
if(sys_ctrl.mode==2)
{
//选择
if(key==KEY4_PRESS)
{
sys_ctrl.cnt++;
if(sys_ctrl.cnt>2)sys_ctrl.cnt=0;
}
//加
else if(key==KEY1_PRESS)
{
switch(sys_ctrl.cnt)
{
case 0://开关
sys_ctrl.alarm_onoff=!sys_ctrl.alarm_onoff;
break;
case 1://时
sys_ctrl.alarm_time[0]++;
if(sys_ctrl.alarm_time[0]>23)sys_ctrl.alarm_time[0]=0;
break;
case 2://分
sys_ctrl.alarm_time[1]++;
if(sys_ctrl.alarm_time[1]>59)sys_ctrl.alarm_time[1]=0;
break;
}
}
//减
else if(key==KEY2_PRESS)
{
switch(sys_ctrl.cnt)
{
case 0://开关
sys_ctrl.alarm_onoff=!sys_ctrl.alarm_onoff;
break;
case 1://时
sys_ctrl.alarm_time[0]--;
if(sys_ctrl.alarm_time[0]<0)sys_ctrl.alarm_time[0]=23;
break;
case 2://分
sys_ctrl.alarm_time[1]--;
if(sys_ctrl.alarm_time[1]<0)sys_ctrl.alarm_time[1]=59;
break;
}
}
}
}
三、实验现象
B站演示视频：https://space.bilibili.com/444388619
联系作者
专注于51单片机、STM32、国产32、DSP、Proteus、ardunio、ESP32、物联网软件开发，PCB设计，视频分享，技术交流。
